Thrust-bearing.



q. H. NORTON. THRUST BEA-RING. 'A FPLICATION FILED APR-28,1915.

Patented July 4, 9m.

mm 'I UNITED STATES PATENT OFFICE.

GHAfiLES H. NOR'I'ON, 0F WORCESTER, MASSACHl J'SETTS, ASSIGNOR TO NORTON GRINDING COMPANY, OF WORCESTER, MASSACHUSETTS, A CORPORATION OF uassacnusn'r'rs.

- runner-BEARING.

Patented July 4, 1916;

Application tiled April 28, 1915. Serial No. 24,563.

a pin 18 fixed in the end of the shaft and I To all whom it may concern I Be it known that I, CHARLES H. NoR'roN,

-a citizen of the United States, residing at Worcester, in the county of Worcester and 1 State of Massachusetts, have'inventedfa new and useful Thrust-Bearing, of which the following is a specification.

This invention relates to a thrust bearing adapted for use in controlling the longitudinal movement or end play of a rotating shaft.

It isthe object of my invention to improve the construction of such bearings, attaining thereby economy of manufacture and increased efiiciency in operatlon, particularly when in the care of unskilled workmen.

.With this object in view one feature of my invention relates th the proyision m a thrust bearing of improved ad ustmg devices by the use of which the necessary adjustment of the hearing may be most easily accomplished.

A further feature of my invention relates to the provision of'ja thrust bearlng in which all of the operating parts are fully inclosed and in which the adjustment of the hearing may be accomplished without displacing any part of the inclosing casing.

A still further feature ofmy invention relates to a construction of bearing in which the parts which receive the greatest wear during the operation of the hearing may be very easily and cheaply replaced.

A preferred form of my lnvention 1s shown in the drawings, in yvh1ch rgure 1 is a sectional elevation of my iihproved bearing; and Fig. '2 is a detail v iew of theflange-engaging member.

Referring to Fig. 1, l' h'ave shown a shaft 10 rotiktable in a cylindricalv bearing 11,

caring may be integral with or seing. 7 The surface 13 is engaged by a flange carried by the shaft 10. In 'the' preferred form offmy invention, this flange takes the ao shape of a disk 14 mounted upon a threaded stud .15 integral with and extending beyond the end of the shaft 10. The (llSk 14 may be retained upon the stud 15 by a nut 16 and a check nut 17, relative rotation of the disk and'shaft being prevented by easing or support 12. The cylinaring 11 is provided with a flange t extending thrpugha hole in the disk 14.

The casing or support 12 is provided with an externally threaded annular portion 19 extending beyond the end of the bearing. This annular portion forms a support for an inclosing member or cap 20 which is internally threa'dedto fit said annular portion and which is designed to be brought closely into firm engagement with the end surface 19 thereof. The inner portion of the cap 20 is bored out to form a cylindrical bearing surface 21 within which is slidably mounted a cupshaped flange-engaging member 22. The member 22 is prevented from angular movement relative to the cap 20 by a key 23 secured to the-cap and engaging a keyway 24 formed in the outer portion of the member 22. The end surface 25 of the member 22.

is adapted to engage the outer surface of the disk 14 previously described. The longitudinal position of themember 22 is controlled bya set screw 26 projecting through the end of the cap 20 and heldin adjusted position by a check nut 27. Suitthe member 22 is non-rotatable relatively to the cap 20, the hole 29 is always alined with the pipe 30. I

With this construction it will be seen that all dust and dirt are fully excluded from the bearing and that the adjustment of the end play maybe accomplished by merely turning the set screw 26 without in any way disturbing the remaining portions of the bearing. l urthermore, the wearing parts 14;

and 22 are of simple construction and may be easily and cheaply replaced when Worn. The thrust bearing, while capable of genc'ral application, is particularly adapted for controlling the end play of the grinding wheel shaft in a heavy grinding machine. Such a shaft is subject to considerable changes in temperature, causing longitudinal or axial expansion and contraction of the shaft. In a common construction of bearings for such a shaftpthe end play is taken up at the opposite ends of a ]0111'I1fl.l.

bearing of considerable length, and the tions can be made therein by those skilled in the art without departing from the spirit and scope thereof as set forth in the claims,

. and I do not wish to be otherwise limited to the details herein disclosed, but

What I claim is 1.A'thrust bearing having, in combination, a fixed cylindrical bearing, a shaft hav- 0 ing an end flan e and rotatable in said bearing, a cap fine with relation to said bearing and inclosing the flanged end of said shaft, a flange-engaging member slidable in said ca and means to move said member longitu mallyof said cap into operative re lation'withsaid flange on said shaft,

tion, a fixed cylindrical bearin flange engaging end surface, a s aft rotata- 40 2. A thrust bearing having, in combination, a casing, a cylindrical shaft bearing within said casing, a shaft rotatable in said bearing and having adjacent one end a radial flange engagin an end surface of said bearing, a ca bite to said casing and inclosmg the anged end of said shaft, a fiangeengaging member slidable in said ca but non-rotatable therein, and means for a justing said member longitudinally in said cap. 7

3. A thrust bearing having, in combinerhaving a,

ble 1n said bearing and having a disk removably secured to one end thereof and forming a flange proiectine bevond theiperiphery of said shaft, a cap secured to said bearing, and a cup-shaped member slidable but non-rotatable in said cap and having an end surface effective to engage the outer surface of said disk, whereby the end lay of said shaft in both directions is ccintroiied.

In testimony whereof I have hereunto set my hand. a

CHARLES H NORTON. 

